Home / 1,113,989.72-1,668,106.76-768,838.23

Finding the Fourth Proportional to 1,113,989.72, 1,668,106.76 and 768,838.23

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Solution

The fourth proportional to 1,113,989.72, 1,668,106.76 and 768,838.23 is: 1,151,271.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113,989.72 : 1,668,106.76 = 768,838.23 : x
  2. Step 2: Convert to fraction form
    1,113,989.72/1,668,106.76 = 768,838.23/x
  3. Step 3: Cross multiply
    1,113,989.72x = 1,668,106.76 × 768,838.23
  4. Step 4: Simplify right side
    1,113,989.72x = 1,282,504,244,965.24
  5. Step 5: Solve for x
    x = 1,282,504,244,965.24/1,113,989.72
  6. Step 6: Final answer
    x = 1,151,271.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.